Do you tend to shoot in late evenings/overcast days? Seems that cars get a lot more depth when it's overcast.

Are you mostly shooting from a tripod with longer exposures?

I shoot pretty much exclusively in the evening or on cloudy days, with the exception of that Audi shoot, and those photos from that meet this weekend, those were done at effectively midday, Audi had photos with clouds in and out though.

I honestly couldn't tell you the last time I used a tripod or did an exposure longer than 1/15th of a second. You can view the EXIF on all of my photos if you're interested in what settings I use.